Varese Sarabande had already issued two Johnny Tillotson compilations, one (Poetry in Motion) covering his Cadence output and the other (The Very Best of Johnny Tillotson) his later MGM era, prior to the appearance of this anthology. It's the most comprehensive of the lot, spanning both Cadence and MGM from 1958 to 1967, and in fact including everything from Poetry in Motion, although lacking some songs from The Very Best of. 25 All-Time Greatest Hits is the best single-disc Tillotson collection to invest in, covering the country, pop, and teen idol rock facets of the versatile if unexciting singer on his 1950s and 1960s releases.

Disco music started as an urban phenomenon in the middle of the decade, died off, then (thanks to the movie Saturday Night Fever suddenly exploded into an exponentially more popular suburban phenomenon. As a result, the genre has two histories one as a dance-club style which appealed to the fringes of society and only occasionally poked its head into the top 40, and another as a cultural movement that dominated pop radio so completely it created its own monumental backlash. This list of the biggest disco records of all time takes both audiences into account.

In April 1964 veteran R&B impresarios George Goldner, Jerry Leiber and Mike Stoller teamed up with the multi-talented producer/songwriting team of Jeff Barry and Ellie Greenwich and launched Red Bird Records in New York City. This was a match made in heaven. Over the next several years the Red Bird label would release some of the most exciting pop records ever recorded. And while it wasn't really planned that way, nearly 90% of the labels successful releases were by female groups or solo artists. "The Girl Group Sound" features 25 of these single releases from the Red Bird catalog.

All-Time Greatest Hits is a 2-LP compilation album by Roy Orbison released in 1972, featuring the original Monument Records recordings. The album was re-released on compact disc by CBS Records in 1989. The album was given a high-quality digital remastering from the original analog master tapes by Steve Hoffman for DCC Compact Classics, Inc. in 1997, catalog number GZS-1118.

This is a great collection of The 5th Dimension on 3 CDs. It would have easily fit on 2 CDs but I guess it was a marketing scheme to make people think they were getting more for their money. Nonetheless, it is still a great collection and features some tracks you will be hard pressed to find anywhere else. The fans of this group will not want to miss this one.

Lynyrd Skynyrd's 2000 compilation All Time Greatest Hits suffers from the same ailments that plague many compilations of its time, but there is one problem in particular that hurts it: instead of offering all of the "all time greatest hits" on one disc, the compilers pulled their punches, overlooking a few big songs while occasionally substituting live or acoustic versions for the original studio versions. That means that this is a Skynyrd compilation without the famed original recording of "Free Bird" – a live version is here instead. It doesn't really matter that it's a good version, taken from 1976's One More from the Road, or that the live version actually charted in the Top 40; nor does it matter that "All I Can Do Is Write About It" is a good acoustic version originally released on the eponymous 1991 box set, because this is a collection made for a general audience. It should, therefore, have the versions that a general audience knows best.

20 All-Time Greatest Hits! features 20 songs from the 1950s, 1960s, and 1970s, 16 of which had previously topped the US R&B charts. The album itself reached #99 on the R&B/Hip-Hop Albums chart when it was first released in 1991, and has been ranked #414 on Rolling Stone magazine's list of the 500 greatest albums of all time.